A242653 - cp's OEIS frontend

A242653 Triangle read by rows: T(n,k) = ((n+k)/2)!/k! if n,k have same parity, otherwise 0.

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	1
6	0
7	2
8	0
9	1
10	2
11	0
12	3
13	0
14	1
15	0
16	6
17	0
18	4
19	0
20	1
21	6
22	0
23	12
24	0
25	5
26	0
27	1
28	0
29	24
30	0
31	20
32	0
33	6
34	0
35	1
36	24
37	0
38	60
39	0
40	30
41	0
42	7
43	0
44	1
45	0
46	120
47	0
48	120
49	0
50	42
51	0
52	8
53	0
54	1
55	120
56	0
57	360
58	0
59	210
60	0
61	56
62	0
63	9
64	0
65	1
66	0
67	720
68	0
69	840
70	0
71	336
72	0
73	72
74	0
75	10
76	0
77	1
78	720
79	0
80	2520
81	0
82	1680
83	0
84	504
85	0
86	90
87	0
88	11
89	0
90	1

[1, 0, 1, 1, 0, 1, 0, 2, 0, 1, 2, 0, 3, 0, 1, 0, 6, 0, 4, 0, 1, 6, 0, 12, 0, 5, 0, 1, 0, 24, 0, 20, 0, 6, 0, 1, 24, 0, 60, 0, 30, 0, 7, 0, 1, 0, 120, 0, 120, 0, 42, 0, 8, 0, 1, 120, 0, 360, 0, 210, 0, 56, 0, 9, 0, 1, 0, 720, 0, 840, 0, 336, 0, 72, 0, 10, 0, 1, 720, 0, 2520, 0, 1680, 0, 504, 0, 90, 0, 11, 0, 1]

cp's OEIS Frontend

A242653 Triangle read by rows: T(n,k) = ((n+k)/2)!/k! if n,k have same parity, otherwise 0.

Table of values

List of values